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关于缓存机制的问题


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大家好,我想虚拟一个黑群晖

  • 虚拟磁盘(未直通).img存放在HDD硬盘,qcow2格式
  • .img的目录设了cache=Yes
  • .img文件大小 > 缓存盘容量

请问根据qcow2的机制,黑群晖磁盘新增数据是先写入缓存后后存入HDD,还是直接写入HDD硬盘

如果直接写入HDD的话,我怕CPU占用会比较高吧?

谢谢

Edited by sinovale
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  • sinovale changed the title to 关于缓存机制的问题

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